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target/riscv: Implement checks for hfence

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Call the helper_hyp_tlb_flush() function on hfence instructions which
will generate an illegal insruction execption if we don't have
permission to flush the Hypervisor level TLBs.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Alistair Francis 2020-04-03 15:54:59 -07:00
parent b8429ded72
commit 2761db5fc2
3 changed files with 24 additions and 26 deletions
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5
target/riscv/helper.h
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@ -76,3 +76,8 @@ DEF_HELPER_2(mret, tl, env, tl)
DEF_HELPER_1(wfi, void, env)
DEF_HELPER_1(tlb_flush, void, env)
#endif
/* Hypervisor functions */
#ifndef CONFIG_USER_ONLY
DEF_HELPER_1(hyp_tlb_flush, void, env)
#endif